Gasket for an electric plug



FIG. 1 is a perspective view of a gasket for an electric plug showing our new design;

FIG. 2 is a front elevational view thereof, the rear elevational view being a mirror image;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a left side elevational view thereof, the right side elevational view being a mirror image.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

The ornamental design for a gasket for an electric plug, as shown and described. 